Multi-degree-of-freedom clamping tool for quartz hemispherical resonator and method of using the same

Abstract

The application relates to a multi-degree-of-freedom clamping tool suitable for a quartz hemispherical resonator and a use method thereof, which comprises a base, a spring chuck assembly, a tension spring assembly and an arc base, the base is connected with the spring chuck assembly through the tension spring assembly, and the arc base is sleeved on the tension spring assembly; the spring chuck assembly comprises a fixed seat, a spring chuck and a gland, a positioning taper hole is arranged on the front-end cylinder of the fixed seat, the spring chuck is inserted into the positioning taper hole, the spring chuck is used for clamping the quartz hemispherical resonator, an arc concave surface is arranged on the tail-end disc of the fixed seat, and a tension spring joint locking screw hole two is arranged at the center of the tail-end disc of the fixed seat. The application has a multi-direction adjusting function, can realize knocking and aligning of the quartz hemispherical resonator body, and is simple and easy to operate.

Description

Technical Field

[0001] This invention relates to the field of multi-degree-of-freedom clamping device technology, specifically to a multi-degree-of-freedom clamping fixture suitable for quartz hemispherical harmonic oscillators and its usage method. Background Technology

[0002] A hemispherical resonator gyroscope is an advanced inertial navigation sensor, widely used in navigation, guidance, and control systems for various strategic / tactical weapons in the aviation, aerospace, maritime, and ground fields. As a high-precision gyroscope, the hemispherical resonator gyroscope features shock resistance, radiation resistance, small size, light weight, low power consumption, high reliability, high precision, long lifespan, and low noise. It has been successfully applied in national defense, communication satellites, manned spaceflight, astronomical observation, and marine engineering. (The hemispherical resonator oscillator is an example of this.) Figure 10 The hemispherical resonator (shown) is the core component of the hemispherical resonator gyroscope. It has support rods inside and outside the spherical shell. When developing high-precision gyroscopes, the resonator must be made of fused silica glass, which also makes the hemispherical resonator a typical low-stiffness, irregularly shaped, thin-walled component. Due to research needs, secondary processing such as trimming, polishing, and chamfering of the inner and outer spherical dimensions of quartz hemispherical resonators is often required. Since the inner and outer spherical dimensions and positional accuracy of quartz hemispherical resonators are high, secondary clamping requires alignment of the quartz hemispherical resonator to ensure the positional accuracy requirements. At the same time, fused silica glass is a hard and brittle material, and the secondary clamping and alignment have the following problems: (1) When using spring clamps to clamp the cylinders at both ends of the quartz hemispherical resonator, the repeatability of the spring clamps themselves cannot meet the coaxiality requirement of ≤0.002mm; (2) After the quartz hemispherical resonator is clamped, due to the overall characteristics of the quartz glass material, it is impossible to strike the quartz hemispherical resonator body for alignment; (3) The existing tooling and clamping methods do not have the requirements for multi-degree-of-freedom movement and cannot meet the multi-directional alignment and adjustment requirements of the quartz hemispherical resonator. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-degree-of-freedom clamping fixture suitable for quartz hemispherical resonators, which has multi-directional adjustment function and can realize the quartz hemispherical resonator body to be aligned by tapping.

[0004] This invention also provides a method for using a multi-degree-of-freedom clamping fixture suitable for quartz hemispherical harmonic oscillators, which is simple and easy to operate.

[0005] The technical problem solved by this invention is achieved through the following technical solution:

[0006] A multi-degree-of-freedom clamping fixture for a quartz hemispherical harmonic oscillator includes a base, a spring collet assembly, a tension spring assembly, and an arc-shaped base. The base and the spring collet assembly are connected by the tension spring assembly, and the arc-shaped base is fitted onto the tension spring assembly.

[0007] The spring collet assembly comprises a fixed seat, a spring collet and a gland. A positioning taper hole is formed in the front end cylinder of the fixed seat. The spring collet is inserted into the positioning taper hole. The spring collet is used for clamping a quartz hemispherical resonator. An arc concave surface is formed in the tail end disc of the fixed seat. A second spring joint locking screw hole is formed in the center of the tail end disc of the fixed seat.

[0008] The spring collet assembly comprises a fixed seat, a spring collet and a gland. A positioning taper hole is formed in the front end cylinder of the fixed seat. The spring collet is inserted into the positioning taper hole. The spring collet is used for clamping a quartz hemispherical resonator. An arc concave surface is formed in the tail end disc of the fixed seat. A second spring joint locking screw hole is formed in the center of the tail end disc of the fixed seat.

[0009] An arc convex surface is formed in the upper end surface of the arc base. A spring through hole is formed in the center of the arc base, which is used for installing the spring assembly.

[0010] Further, the base is a stepped cylinder structure. A plurality of bolt holes are formed in the step circumference.

[0011] Further, a plurality of threaded through holes are formed in the circumference of the arc base.

[0012] Further, a plurality of threaded locking holes are formed in the circumference of the fixed seat.

[0013] A use method of a multi-degree-of-freedom clamping tool suitable for a quartz hemispherical resonator, comprising the following steps:

[0014] Step 1, connecting the base cylinder with a machine tool;

[0015] Step 2, rotating the threaded end of the spring joint into the first spring joint locking screw hole of the base, and connecting one end of the spring with the connecting end of the spring joint. The spring is inserted into the spring through hole of the arc base. The arc base is fixed with the base by bolts.

[0016] Step 3, rotating the threaded end of the spring joint into the second spring joint locking screw hole in the center of the tail end disc of the fixed seat of the spring collet assembly, and connecting the other end of the spring with the connecting end of the spring joint. The arc concave surface of the fixed seat is matched with the arc convex surface of the arc base, and the two are fixed by bolts.

[0017] Step 4, matching the spring collet with the gland, and installing them in the positioning taper hole.

[0018] Step 5, after the assembly is completed, placing the lower end of the quartz hemispherical resonator into the center hole of the spring collet, and tightening the gland to fix the quartz hemispherical resonator.

[0019] Step 6, pressing the dial indicator against the end face of the quartz hemispherical resonator to be aligned. Loosen the locking bolts of the spring collet assembly and the arc base. Gently tap the front end of the spring collet assembly. If the clamped quartz hemispherical resonator swings, repeat the tapping and alignment. Finally, tighten the bolts.

[0020] Step 7, after the end face alignment, the circular dial gauge is used to align the quartz hemispherical resonator, the locking bolts of the base and the circular arc base are loosened, the circular arc base is tapped, the circular arc base, the spring chuck assembly and the clamped quartz hemispherical resonator are moved radially, and after repeated alignment, the bolts are tightened, and the quartz hemispherical resonator is completely aligned;

[0021] Step 8, repeat steps 5 to 7, and replace the quartz hemispherical resonator.

[0022] The advantages and positive effects of the present application are:

[0023] 1. The present application is suitable for the multi-degree-of-freedom clamping tool of the quartz hemispherical resonator, the spring chuck assembly of which makes the clamped surface of the quartz hemispherical resonator bear uniform force, preventing the quartz hemispherical resonator from breaking; at the same time, the spring chuck has self-locking function, making the clamping of the quartz hemispherical resonator safe and reliable.

[0024] 2. The present application is suitable for the multi-degree-of-freedom clamping tool of the quartz hemispherical resonator, the alignment end of which uses double connection of circular arc and plane, and uses tension spring to provide pre-tightening force, so that the chuck can move along the X and Y axes of the machine tool and rotate slightly around the X and Y axes, having multi-directional adjustment function.

[0025] 3. The present application is suitable for the use method of the multi-degree-of-freedom clamping tool of the quartz hemispherical resonator, which is simple and easy to operate. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the assembly drawing of the multi-degree-of-freedom clamping tool of the quartz hemispherical resonator;

[0027] Figure 2 It is the perspective view of the multi-degree-of-freedom clamping tool of the quartz hemispherical resonator;

[0028] Figure 3 It is the connection drawing of the base, tension spring assembly and spring chuck assembly of the multi-degree-of-freedom clamping tool of the quartz hemispherical resonator;

[0029] Figure 4 It is the exploded view of the spring chuck assembly of the multi-degree-of-freedom clamping tool of the quartz hemispherical resonator;

[0030] Figure 5 It is the fixed seat perspective view of the spring chuck assembly of the multi-degree-of-freedom clamping tool of the quartz hemispherical resonator;

[0031] Figure 6 It is the circular arc base perspective view of the multi-degree-of-freedom clamping tool of the quartz hemispherical resonator;

[0032] Figure 7Another perspective view of the arc base of the multi-degree-of-freedom clamping tool suitable for the quartz hemispherical resonator;

[0033] Figure 8 The base perspective view of the multi-degree-of-freedom clamping tool suitable for the quartz hemispherical resonator;

[0034] Figure 9 The structure diagram of the tension spring assembly of the multi-degree-of-freedom clamping tool suitable for the quartz hemispherical resonator;

[0035] Figure 10 The perspective view of the quartz hemispherical resonator;

[0036] In the figure,

[0037] 1-base, 11-tension spring joint locking screw hole one, 2-arc base, 21-arc convex surface, 22-tension spring through hole, 23-screw locking hole, 3-spring collet assembly, 31-pressing cap, 32-spring collet, 33-positioning taper hole, 34-fixing seat, 35-arc concave surface, 36-tension spring joint locking screw hole two, 4-quartz hemispherical resonator, 5-tension spring assembly, 51-tension spring, 52-tension spring joint. DETAILED DESCRIPTION

[0038] The application will be further described in detail through specific examples below, which are only descriptive and not limiting, and cannot limit the protection scope of the application.

[0039] A multi-degree-of-freedom clamping tool suitable for a quartz hemispherical resonator, comprising a base 1, a spring collet assembly 3, a tension spring assembly and an arc base 2, the base 1 is connected with the spring collet assembly 3 through the tension spring assembly 5, and the arc base 2 is sleeved on the tension spring assembly 5.

[0040] The spring collet assembly 3 comprises a fixing seat 34, a spring collet 32 and a pressing cap 31, the front end cylinder of the fixing seat 34 is provided with a positioning taper hole 33, the spring collet 32 is inserted into the positioning taper hole 33, the spring collet 32 is used for clamping the quartz hemispherical resonator 4, the tail end disc of the fixing seat 34 is provided with an arc concave surface 35, and the tail end disc of the fixing seat 34 is provided with a tension spring joint locking screw hole two 36 in the center;

[0041] The tension spring assembly 5 comprises a tension spring 51 and a tension spring joint 52 connected to the left and right ends of the tension spring 51, the left end of the tension spring 51 is threadedly connected with the tension spring joint locking screw hole one 11 provided in the center of the base 1 through the tension spring joint 52, and the right end of the tension spring 51 is threadedly connected with the tension spring joint locking screw hole two 36 through the tension spring joint 52;

[0042] The upper end surface of the circular arc base 2 is provided with a circular arc convex surface 21 matched with the circular arc concave surface 35, the circular arc concave surface 35 of the fixed seat 34 is matched with the circular arc convex surface 21 of the circular arc base 2, and the rotation of the quartz hemispherical resonator 4 in each direction is realized; the center of the circular arc base 2 is provided with a tension spring through hole 22 for installing the tension spring assembly 5.

[0043] The base 1 is a stepped cylindrical structure, and the stepped circumference is provided with a plurality of bolt holes; the circular arc base 2 is provided with a plurality of threaded through holes in the circumference; and the fixed seat 34 is provided with a plurality of threaded locking holes 23 in the circumference.

[0044] The spring collet assembly 3 uses the spring collet 32 as a clamping part for locking the processed quartz hemispherical resonator 4; the circular arc concave surface 35 provided on the tail end disc of the fixed seat 34 is a combined component for alignment; the positioning taper hole 33 provided on the front end cylinder of the fixed seat 34 is matched with the spring collet 32, the tensioning thread provided on the front end of the front end cylinder of the fixed seat 34 is matched with the gland 31, the gland 31 uses the thread tightening pressure and the taper to make the spring collet 32 shrink, so as to realize the positioning and clamping of the quartz hemispherical resonator 4; the tension spring joint locking thread hole two 36 provided in the center of the tail end disc of the fixed seat 34 is used for fixing the tension spring joint 52, so as to realize the connection between the spring collet assembly 3 and the tension spring 51, and the threaded through holes in the circumference of the tail end disc of the fixed seat 34 are connected with the circular arc base 2 through bolts.

[0045] The circular arc base 2 is matched with the spring collet assembly 3 through the circular arc convex surface 21, and is connected through bolts, so that the spring collet assembly 3 swings along the circular arc surface, and the quartz hemispherical resonator 4 has a plane adjustment function.

[0046] The base 1 is connected with a machine tool at one end and is connected with the circular arc base 2 through bolts at the other end, so as to realize the radial movement adjustment function of the quartz hemispherical resonator 4; the other end of the base 1 is connected with the spring collet assembly 3 through the tension spring assembly 5, a pre-tightening tension is formed, and the spring collet assembly 3 can be tightened in the case that the bolt is unscrewed.

[0047] The working principle of the present application is as follows:

[0048] The threaded end of the tension spring joint 52 is screwed into the tension spring joint locking threaded hole one 11 of the base 1, and the connecting end of the tension spring joint 52 is connected to one end of the tension spring 51; the tension spring 51 is inserted into the tension spring through hole 22 of the arc base 2, and the arc base 2 is fixed to the base 1 by a bolt; the threaded end of the tension spring joint 52 is screwed into the tension spring joint locking threaded hole two 36 in the center of the disc at the tail end of the fixed seat 34 of the spring collet assembly 3, and the connecting end of the tension spring joint 52 is connected to the other end of the tension spring 51; the arc concave surface 35 of the fixed seat 34 is installed in cooperation with the arc convex surface 21 of the arc base 2, and is tightened by a bolt; the spring collet 32 is installed in the positioning taper hole 33 in cooperation with the gland 31; after assembly is completed, the lower end of the quartz hemispherical resonator 4 is placed into the center hole of the spring collet 32, and the quartz hemispherical resonator 4 is fixed by tightening the gland 31; the end face of the quartz hemispherical resonator 4 to be aligned is pressed by a dial gauge, and the locking bolt of the spring collet assembly 3 and the arc base 2 is loosened; due to the cooperation of the arc concave surface 35 of the fixed seat 34 and the arc convex surface 21 of the arc base 2, and the pre-tightening tension provided by the tension spring 51, the front end of the spring collet assembly 3 is tapped lightly, the quartz hemispherical resonator 4 clamped by the spring collet assembly 3 swings, and after repeated tapping and alignment, the bolt is tightened; after the end face is aligned, the circumferential dial gauge of the quartz hemispherical resonator 4 to be aligned is pressed, and the locking bolt of the base 1 and the arc base 2 is loosened; due to the planar contact between the base 1 and the arc base 2 and the pre-tightening tension provided by the tension spring 51, the arc base 2 is tapped lightly, the arc base 2 together with the spring collet assembly 3 and the quartz hemispherical resonator 4 clamped by the spring collet assembly 3 moves radially, and after repeated tapping and alignment, the bolt is tightened, and the quartz hemispherical resonator 4 is completely aligned.

[0049] A method for using a multi-degree-of-freedom clamping tool suitable for a quartz hemispherical resonator, comprising the following steps:

[0050] Step 1, connecting the base 1 cylinder to a machine tool;

[0051] Step 2, screwing the threaded end of the tension spring joint 52 into the tension spring joint locking threaded hole one 11 of the base 1, and connecting the connecting end of the tension spring joint 52 to one end of the tension spring 51; inserting the tension spring 51 into the tension spring through hole 22 of the arc base 2, and fixing the arc base 2 to the base 1 by a bolt;

[0052] Step 3, screwing the threaded end of the tension spring joint 52 into the tension spring joint locking threaded hole two 36 in the center of the disc at the tail end of the fixed seat 34 of the spring collet assembly 3, and connecting the connecting end of the tension spring joint 52 to the other end of the tension spring 51; installing the arc concave surface 35 of the fixed seat 34 in cooperation with the arc convex surface 21 of the arc base 2, and tightening by a bolt;

[0053] Step 4, installing the spring collet 32 in the positioning taper hole 33 in cooperation with the gland 31;

[0054] Step 5, after assembly is completed, placing the lower end of the quartz hemispherical resonator 4 into the center hole of the spring collet 32, and fixing the quartz hemispherical resonator 4 by tightening the gland 31;

[0055] Step 6, the end face of the quartz hemispherical resonator 4 is pressed by a dial gauge, the locking bolt of the spring chuck assembly 3 and the circular arc base 2 is loosened, because the circular arc concave surface 35 of the fixed seat 34 matches the circular arc convex surface 21 of the circular arc base 2, and the pre-tightening tension of the tension spring 51 is provided, the front end of the spring chuck assembly 3 is tapped, the quartz hemispherical resonator 4 appears to swing, after repeated tapping and alignment, the bolt is tightened;

[0056] Step 7, after the end face is aligned, the circumference of the quartz hemispherical resonator 4 is pressed by a dial gauge, the locking bolt of the base 1 and the circular arc base 2 is loosened, because the base 1 and the circular arc base are in plane contact, and the pre-tightening tension of the tension spring 51 is provided, the circular arc base is tapped, the circular arc base together with the spring chuck assembly 3 and the clamped quartz hemispherical resonator 4 appears to move radially, after repeated tapping and alignment, the bolt is tightened, and the quartz hemispherical resonator 4 is completely aligned;

[0057] Step 8, repeat steps 5-7, and replace the quartz hemispherical resonator 4.

[0058] Although the embodiments and drawings of the present application are disclosed for the purpose of illustration, those skilled in the art can understand that various alternatives, changes and modifications are possible without departing from the spirit and scope of the present application and the appended claims, therefore, the scope of the present application is not limited to the disclosed content of the embodiments and drawings.

Claims

1. A multi-degree-of-freedom clamping fixture suitable for quartz hemispherical harmonic oscillators, characterized in that: It includes a base (1), a spring collet assembly (3), a tension spring assembly (5) and an arc-shaped base (2). The base (1) and the spring collet assembly (3) are connected by the tension spring assembly (5), and the arc-shaped base (2) is fitted on the tension spring assembly (5). The spring collet assembly (3) includes a fixed base (34), a spring collet (32), and a pressure cap (31). The fixed base (34) has a positioning conical hole (33) at the front end of its cylindrical body. The spring collet (32) is inserted into the positioning conical hole (33). The spring collet (32) is used to clamp a quartz hemispherical resonator (4). The fixed base (34) has a circular arc concave surface (35) at the rear end of its disc. The fixed base (34) has a tension spring connector locking threaded hole (36) at the center of the rear end of its disc. The tension spring assembly (5) includes a tension spring (51) and tension spring connectors (52) connecting the left and right ends of the tension spring (51). The left end of the tension spring (51) is threadedly connected to the first (11) locking threaded hole of the tension spring connector in the center of the base (1) through the tension spring connector (52), and the right end of the tension spring (51) is threadedly connected to the second (36) locking threaded hole of the tension spring connector through the tension spring connector (52). The upper surface of the arc base (2) is provided with an arc convex surface (21) that is adapted to the arc concave surface (35), and the center of the arc base (2) is provided with a tension spring through hole (22) for inserting the tension spring assembly (5).

2. The multi-degree-of-freedom clamping fixture for quartz hemispherical harmonic oscillators according to claim 1, characterized in that: The base (1) is a stepped cylindrical structure with several bolt holes on the circumference of the steps.

3. The multi-degree-of-freedom clamping fixture for quartz hemispherical harmonic oscillators according to claim 1, characterized in that: The circular arc base (2) has several threaded through holes around its circumference.

4. The multi-degree-of-freedom clamping fixture for quartz hemispherical harmonic oscillators according to claim 1, characterized in that: The fixed base (34) has several threaded locking holes (23) around its circumference.

5. A method of using the multi-degree-of-freedom clamping fixture for a quartz hemispherical harmonic oscillator as described in claim 1, characterized in that: Includes the following steps: Step 1: Connect the base cylinder to the machine tool; Step 2: Screw the threaded end of the tension spring connector into the locking threaded hole one of the tension spring connector on the base, and connect the connecting end of the tension spring connector to one end of the tension spring; insert the tension spring through the tension spring through hole of the arc base, and fix the arc base to the base with bolts; Step 3: Screw the threaded end of the tension spring connector into the locking threaded hole 2 of the center disc at the tail end of the spring collet assembly fixing seat. Connect the other end of the tension spring connector to the other end of the tension spring. The concave arc surface of the fixing seat matches the convex arc surface of the arc base and is tightened with bolts. Step 4: Fit the spring collet with the pressure cap and install it into the positioning cone hole; Step 5: After assembly, place the lower end of the quartz hemispherical resonator into the center hole of the spring clip, and tighten the cap to fix the quartz hemispherical resonator. Step 6: Press the end face of the quartz hemispherical resonator to be aligned with a dial indicator, loosen the locking bolts between the spring collet assembly and the arc base, tap the front end of the spring collet assembly lightly, and the quartz hemispherical resonator will swing. After repeatedly tapping to align, tighten the bolts. Step 7: After the end face is aligned, press the dial indicator on the circumference of the quartz hemispherical resonator to be aligned. Loosen the locking bolts between the base and the arc base, and tap the arc base lightly. The arc base, together with the spring chuck assembly and the clamping quartz hemispherical resonator, will move radially. After repeated tapping for alignment, tighten the bolts to achieve complete alignment of the quartz hemispherical resonator. Step 8: Repeat steps 5 to 7, and replace the quartz hemispherical harmonic oscillator.

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